<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
// $Id$

class Page extends Think {
    // 起始行数
    public $firstRow	;
    // 列表每页显示行数
    public $listRows	;
    // 页数跳转时要带的参数
    public $parameter  ;
    // 分页总页面数
    protected $totalPages  ;
    // 总行数
    protected $totalRows  ;
    // 当前页数
    protected $nowPage    ;
    // 分页的栏的总页数
    protected $coolPages   ;
    // 分页栏每页显示的页数
    protected $rollPage   ;
	// 分页显示定制
    protected $config  =	array('header'=>'条记录','prev'=>'上一页','next'=>'下一页','first'=>'第一页','last'=>'最后一页','theme'=>' %totalRow% %header% %nowPage%/%totalPage% 页 %first% %upPage% %prePage%  %linkPage%  %nextPage%  %downPage%  %end%');

    /**
     +----------------------------------------------------------
     * 架构函数
     +----------------------------------------------------------
     * @access public
     +----------------------------------------------------------
     * @param array $totalRows  总的记录数
     * @param array $listRows  每页显示记录数
     * @param array $parameter  分页跳转的参数
     +----------------------------------------------------------
     */
    public function __construct($totalRows,$listRows,$parameter='') {
        $this->totalRows = $totalRows;
        $this->parameter = $parameter;
        $this->rollPage = C('PAGE_ROLLPAGE');
        $this->listRows = !empty($listRows)?$listRows:C('PAGE_LISTROWS');
        $this->totalPages = ceil($this->totalRows/$this->listRows);     //总页数
        $this->coolPages  = ceil($this->totalPages/$this->rollPage);
        $this->nowPage  = !empty($_GET[C('VAR_PAGE')])?$_GET[C('VAR_PAGE')]:1;
        if(!empty($this->totalPages) && $this->nowPage>$this->totalPages) {
            $this->nowPage = $this->totalPages;
        }
        $this->firstRow = $this->listRows*($this->nowPage-1);
    }

    public function setConfig($name,$value) {
        if(isset($this->config[$name])) {
            $this->config[$name]    =   $value;
        }
    }

    /**
     +----------------------------------------------------------
     * 分页显示输出
     +----------------------------------------------------------
     * @access public
     +----------------------------------------------------------
     */
    public function show() {
        if(0 == $this->totalRows) return '';
        $p = C('VAR_PAGE');
        $nowCoolPage      = ceil($this->nowPage/$this->rollPage);
        $url  =  $_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':"?").$this->parameter;
        $parse = parse_url($url);
        if(isset($parse['query'])) {
            parse_str($parse['query'],$params);
            unset($params[$p]);
            $url   =  $parse['path'].'?';
            $parurl = http_build_query($params);
            $url = empty($parurl)? $url:$url.$parurl.'&';
        }
        //上下翻页字符串
        $upRow   = $this->nowPage-1;
        $downRow = $this->nowPage+1;
        if ($upRow>0){
            $upPage="<a href='".$url.$p."=$upRow'>".$this->config['prev']."</a>";
        }else{
            $upPage="";
        }

        if ($downRow <= $this->totalPages){
            $downPage="<a href='".$url.$p."=$downRow'>".$this->config['next']."</a>";
        }else{
            $downPage="";
        }
        // << < > >>
        if($nowCoolPage == 1){
            $theFirst = "";
            $prePage = "";
        }else{
            $preRow =  $this->nowPage-$this->rollPage;
            $prePage = "<a href='".$url.$p."=$preRow' >上".$this->rollPage."页</a>";
            $theFirst = "<a href='".$url.$p."=1' >".$this->config['first']."</a>";
        }
        if($nowCoolPage == $this->coolPages){
            $nextPage = "";
            $theEnd="";
        }else{
            $nextRow = $this->nowPage+$this->rollPage;
            $theEndRow = $this->totalPages;
            $nextPage = "<a href='".$url.$p."=$nextRow' >下".$this->rollPage."页</a>";
            $theEnd = "<a href='".$url.$p."=$theEndRow' >".$this->config['last']."</a>";
        }
        // 1 2 3 4 5
        $linkPage = "";
        for($i=1;$i<=$this->rollPage;$i++){
            $page=($nowCoolPage-1)*$this->rollPage+$i;
            if($page!=$this->nowPage){
                if($page<=$this->totalPages){
                    $linkPage .= "&nbsp;<a href='".$url.$p."=$page'>&nbsp;".$page."&nbsp;</a>";
                }else{
                    break;
                }
            }else{
                if($this->totalPages != 1){
                    $linkPage .= "&nbsp;<span class='current'>".$page."</span>";
                }
            }
        }
        $pageStr	 =	 str_replace(
            array('%header%','%nowPage%','%totalRow%','%totalPage%','%upPage%','%downPage%','%first%','%prePage%','%linkPage%','%nextPage%','%end%'),
            array($this->config['header'],$this->nowPage,$this->totalRows,$this->totalPages,$upPage,$downPage,$theFirst,$prePage,$linkPage,$nextPage,$theEnd),$this->config['theme']);
        return $pageStr;
    }

	
	public function mshow($style = 1) {
//		$pagearray = array(
//			'totalPages' => 0, //总页数
//			'pageSize' => 10, //每页记录数目
//			'totalRows' => $this->totalRows, //总记录数目
//			'nowPageNum' => 1,
//			'nowPage'=>'', //当前页面URL
//			'upPage'=>'',//页面URL
//			'downPage'=>'',//页面URL
//			'prePages' => array(),
//			'nextPages' => array(),
//			'firstPage'=>'',//页面URL
//			'endPage'=>'',//页面URL
//		);

		$dstyle = array (
			'header' => '条记录',
			'prev' => '上一页',
			'next' => '下一页',
			'first' => '第一页',
			'last' => '最后一页',
			'theme' => ' %totalRow% %header% %nowPage%/%totalPage% 页 %upPage% %downPage% %first%  %prePage%  %linkPage%  %nextPage% %end%'
		);
		$style1 = array (
		'header' => '条记录',
		'link_class' => '',
		'prev' => '<',
		'prev_class' =>'',
		'next' => '>',
		'next_class' => '',
		'first' => '<<',
		'first_class' => '',
		'last' => '>>',
		'last_class' => '',
		'theme' => '<form action="" method="get">%upPage% %first% %prePage% %linkPage% %nextPage% %end% <input name="p" type="text" class="sr vm" /><input name="" type="submit" value="确定" class="sub vm" /></form>'
		);
		$style2 = array (
		'header' => '条记录',
		'link_class' => '',
		'prev' => '上一页',
		'prev_class' =>'class="pgup"',
		'next' => '下一页',
		'next_class' => 'class="pgdn"',
		'first' => '第一页',
		'first_class' => '',
		'last' => '最后一页',
		'last_class' => '',
		'theme' => '%upPage%  %linkPage% %downPage% <div class="page_break bk_element"><form action="" method="get"><span>共'.$this->totalPages.'页 到第<input type="text" class="page_number" name="p" gtbfieldid="98">页<input type="submit" class="page_sub" value="确定"></span></form></div>'
		);
		if($style == 1){
			$this->config = $style1;
		}else{
			$this->config = $style2;
		}
		
		
		if (0 == $this->totalRows || 1 == $this->totalPages)
			return '';
		$p = C('VAR_PAGE');
		$nowCoolPage = ceil($this->nowPage / $this->rollPage);
		$url = $_SERVER['REQUEST_URI'];
		$parse = parse_url($url);
		$parame_start = '?';
		if (isset ($parse['query'])) {
			parse_str($parse['query'], $params);
			unset ($params[$p]);
			if(empty($params)){
				$url = $parse['path'];
			}else{
				$url = $parse['path'] . '?' . http_build_query($params);
				$parame_start = '&';
			}
		}
		//上下翻页字符串
		$upRow = $this->nowPage - 1;
		$downRow = $this->nowPage + 1;
		if ($upRow > 0) {
			$upPage = "<a href='" . $url . $parame_start . $p . "=$upRow' ". $this->config['prev_class'] .">" . $this->config['prev'] . "</a>";
		} else {
			$upPage = "";
		}

		if ($downRow <= $this->totalPages) {
			$downPage = "<a href='" . $url . $parame_start . $p . "=$downRow' ". $this->config['next_class'] .">" . $this->config['next'] . "</a>";
		} else {
			$downPage = "";
		}
		// << < > >>
		if ($nowCoolPage == 1) {
			$theFirst = "";
			$prePage = "";
		} else {
			$preRow = $this->nowPage - $this->rollPage;
			$prePage = "<a href='" . $url . $parame_start . $p . "=$preRow' >上" . $this->rollPage . "页</a>";
			$theFirst = "<a href='" . $url . $parame_start . $p . "=1'  ". $this->config['first_class'] .">" . $this->config['first'] . "</a>";
		}
		if ($nowCoolPage == $this->coolPages) {
			$nextPage = "";
			$theEnd = "";
		} else {
			$nextRow = $this->nowPage + $this->rollPage;
			$theEndRow = $this->totalPages;
			$nextPage = "<a href='" . $url . $parame_start . $p . "=$nextRow' >下" . $this->rollPage . "页</a>";
			$theEnd = "<a href='" . $url . $parame_start . $p . "=$theEndRow'  ". $this->config['last_class'] .">" . $this->config['last'] . "</a>";
		}
		// 1 2 3 4 5
		$linkPage = "";
		for ($i = 1; $i <= $this->rollPage; $i++) {
			$page = ($nowCoolPage -1) * $this->rollPage + $i;
			if ($page != $this->nowPage) {
				if ($page <= $this->totalPages) {
					$linkPage .= "<a href='" . $url . $parame_start . $p . "=$page'>" . $page . "</a>";
				} else {
					break;
				}
			} else {
				if ($this->totalPages != 1) {
					if($style != 1){
						$linkPage .= "<a class='active' href='#nogo'>" . $page . "</a>";
					}else{
						$linkPage .= "<span class='current'>" . $page . "</span>";
					}
					
				}
			}
		}
		
		$pageStr = str_replace(array (
			'%header%',
			'%nowPage%',
			'%totalRow%',
			'%totalPage%',
			'%upPage%',
			'%downPage%',
			'%first%',
			'%prePage%',
			'%linkPage%',
			'%nextPage%',
			'%end%'
		), array (
			$this->config['header'],
			$this->nowPage,
			$this->totalRows,
			$this->totalPages,
			$upPage,
			$downPage,
			$theFirst,
			$prePage,
			$linkPage,
			$nextPage,
			$theEnd
		), $this->config['theme']);
		return $pageStr;
	}
	public function addShow(){
		if (0 == $this->totalRows)
			return '';
		$p = C('VAR_PAGE');
		$nowCoolPage = ceil($this->nowPage / $this->rollPage);
		$url = $_SERVER['REQUEST_URI'];
		$parse = parse_url($url);
		$parame_start = '?';
		if (isset ($parse['query'])) {
			parse_str($parse['query'], $params);
			unset ($params[$p]);
			if(empty($params)){
				$url = $parse['path'];
			}else{
				$url = $parse['path'] . '?' . http_build_query($params);
				$parame_start = '&';
			}
		}
		$upRow = $this->nowPage - 1;
		$downRow = $this->nowPage + 1;
		if ($upRow > 0) {
			$upPage = "<a href='" . $url . $parame_start . $p . "=$upRow' class='pgup'>" . $this->config['prev'] . "</a>";
		} else {
			$upPage = "<a href='#nogo' class='pgup'>" . $this->config['prev'] . "</a>";
		}

		if ($downRow <= $this->totalPages) {
			$downPage = "<a href='" . $url . $parame_start . $p . "=$downRow' class='pgdn' >" . $this->config['next'] . "</a>";
		} else {
			$downPage = "<a href='#nogo' class='pgdn' >" . $this->config['next'] . "</a>";
		}
		return '<span class="fl">'.$this->nowPage.'/'.$this->totalPages.'</span>'.$upPage.$downPage;
	}
}
?>